PVD-0B-8G5 Charge Pump

 PVD-0B-8G5 Charge Pump Overview

Core Features & Advantages

• Precise Matching: Developed strictly according to Nachi's original data. The suffix 8G5 represents a specific pressure relief valve setting and mounting interface, perfectly matching the PVD-0B main pump for guaranteed interchangeability and tight sealing.

• High Efficiency: Adopts high-precision involute gear meshing technology with stable flow and low pressure loss, effectively protecting the main pump components.

• Low Pressure Protection: The rated charge pressure is maintained at 0.8–2.0 MPa, the optimal range for closed-loop piston pumps, preventing air suction cavitation while avoiding system overload.

• Strong Compatibility: Features a standard 10-tooth spline shaft design, directly plugged into the main pump drive end for easy installation without modification.

• Durable & Reliable: The pump body is made of high-strength cast iron, and the gears are carburized and hardened for wear resistance and impact resistance, suitable for continuous heavy-duty operation of mini excavators.

PVD-0B-8G5 Charge Pump Hydraulic Circuit

The PVD-0B-8G5 charge pump hydraulic circuit is specifically designed to support the stable operation of the main hydraulic pump by delivering a controlled and reliable flow of low-pressure oil. As a key auxiliary circuit, it ensures that the hydraulic system maintains proper internal balance, even under fluctuating working conditions.

This circuit is widely recognized for its responsive pressure control and efficient oil circulation, making it suitable for compact and medium-duty hydraulic machinery.

Specifications

Applications

• Mini excavators and small construction machinery

• Closed-loop piston hydraulic pump systems

• Mobile hydraulic driving equipment

• Light engineering hydraulic transmission units

• Auxiliary oil supply and pressure stabilization systems

Packaging & Delivery

Protective Wrapping: 

To safeguard the pump from environmental damage.

Custom Crates: 

For larger, heavier pumps, ensuring safe handling.

Documentation: 

Includes installation, maintenance instructions, and warranty details.

Delivery time depends on the model, customizations, and location but typically ranges from 2 to 6 weeks from the order date.

PVD-0B-8G5 Charge Pump FAQ 

1.Do I need to install the PVD-0B-8G5 Charge Pump separately? What should I pay attention to when replacing it?

No separate installation is required, it is assembled together with the main pump.

During replacement, align the spline shaft precisely, tighten screws with standard torque, keep mounting surface clean and use proper sealing ring to avoid oil leakage.

2.What preparations are needed before starting the PVD-0B-8G5 Charge Pump for the first time?

Check all pipe connections for tightness and no leakage. Fill standard hydraulic oil to proper level. Confirm correct rotation direction and exhaust air from the system. Inspect installation firmness and filter condition before startup.

3.What are the requirements for hydraulic oil when using the PVD-0B-8G5 Charge Pump?

Use ISO VG46 or VG68 anti-wear hydraulic oil. Keep oil temperature between -20°C and 80°C. Ensure clean oil quality and good seal compatibility, never mix different oil types

4. Can the rotation direction of the  PVD-0B-8G5Charge Pump be reversed? What are the consequences of reverse rotation?

5. Is the PVD-0B-8G5 Charge Pump a dedicated accessory? Can it work normally without it?

It is a dedicated matching part. The device cannot operate normally without it, which will trigger pressure failure and severe damage to hydraulic components.

6.Can the displacement of the PVD-0B-8G5 Charge Pump be replaced arbitrarily?

No, it cannot. The standard displacement is matched to the system requirements of the host equipment. Replacing it with an unapproved displacement (either smaller or larger) will lead to insufficient oil supply or excessive pressure, which may cause system failure or component damage. The appropriate displacement should be selected strictly according to the actual working conditions and system design parameters of the equipment.

Certifications & Quality Assurance

PVD-0B-8G5 Charge pumps are manufactured in compliance with international standards, ensuring high performance and reliability:

ISO 9001: Certified for quality management systems.

CE Certification: Ensures compliance with European safety, health, and environmental protection standards.

RoHS Compliance: Ensures the pump does not contain hazardous materials.

Factory Testing: Every pump is rigorously tested for performance, pressure, and leak integrity before shipping.

Order FAQ

1.How does the variable displacement work?

The pump's flow is adjusted by changing the angle of an internal swash plate. As the swash plate angle changes, the stroke length of the pistons varies, which in turn changes the volume of fluid displaced per rotation, allowing the flow rate to adapt to the system's needs.

2.What's our advantages?

Factory established in 2005;

With a great deal of production experience;

80+ employees become the professional team;

Constant updated ERP system ensure efficiency of work;

Sophisticated equipment ehanced the accuracy of products;

Professional salesmen provide the greast service;

With a large number of famous customers all over the world;

Great after-sales service;

With the long term cooperation with famous logistics and express company in China,provide the better goods service.

3.What is your payment terms?

Small order/sample order,full payment in advance; Big orders send the first payment 30% before the production,and the balance before shippment.We'll show the photos of the products and packages before delivery.

4.Can you make my own brand on the products?

Of course we can. Just send me your logo  we can make it for you.

5.What is our main export market?

America(40.5%):USA, Canada, Argentina, Brazil

Europe(30.8%):Italy,Germany,England,Holland,Spain,Swiss,Finland,Russia,Poland.

Asia(23.5%):Korea,singapore,India,Turkey,Vietnam,Saudi Arabia,Syria, Israel,Lebanon.

Others(5.8%).

Our engineers are inspecting the products.

Our factory covers a large scale

Our exhibition booth and products